Multiport USB Playstand for Nintendo Switch by Hori

From Hori's Website

Great for local multiplayer on the go! Enjoy using your favorite wired Nintendo Switch peripherals in tabletop mode with the Multiport USB PlayStand by HORI. Connects up to four Nintendo Switch compatible USB devices at once.

Charges as you play using your Nintendo Switch AC Adapter. Adjusts to the perfect angle for the best multiplayer experience then folds up for transport to your next battle.